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# Release Note

## You may encounter
- Error: Cannot find module '@noble/secp256k1'

We are using ethers utils and it has an uncompatible upgrade which causes the problem. To solve this issue, please install @noble/secp256k1@1.7.1 manually:

`npm install @noble/secp256k1@1.7.1`

TronWeb 6.0.0(supporting typescript) beta version has been published on npm and it will become an official version soon. Please install and enjoy it as follows:

`npm install tronweb@beta`

## New Features
- Add `blockHeader` in options parameter in almost all apis of TransactioinBuilder. And the type is:
```ts
blockHeader?: {
    ref_block_bytes: string;
    ref_block_hash: string;
    expiration: number;
    timestamp: number;
};
```
If you pass an empty object, TronWeb will request block header from the chain. If you omit some fields or pass the wrong type, TronWeb will throw an error.
- Support [TIP-586](https://github.com/tronprotocol/tips/blob/master/tip-586.md). Add Resource Unit Price Query APIs for Solidity.
- Add `Trx.ecRecover` to recover the address of a signed transaction.

## GitHub issues
1. Support multi-dimension address array such as address[][] https://github.com/tronprotocol/tronweb/issues/433
2. fix error when triggerSmartContract with error address due to the undefined callback. https://github.com/tronprotocol/tronweb/issues/429
3. Axios update https://github.com/tronprotocol/tronweb/issues/445